Apparatus for preparing masking aprons



p 1950 r w. A. BIHARY 2,522,773

APPARATUS FOR PREPARING MASKING APRONS Filed Dec. 10, 1948 2 Sheets-Sheet l Inventor William A. Biliary WWW 5M6" Sept. 19, 1950 w. A. BIHARY APPARATUS FoR' PREPARING MASKINGAFRONS 2 Sheets-Sheet 2 Filed Dec. 10, 1948 Inventor William A B/hary m YB] Q Attorneys Patented Sept. 19, 1950 OFFICE APPARATUS PREPARING MASKIN'G A RO S William A. pihary, Miami, Fla. AppljcationD ecember 10, 1948, Serial No. 64,482

This invention relates to apparatus for preparing masking aprons such as are used in the finishing of automobiles and other articles where it is desirable to use an apron for masking out portions of the surface, particularly when a spray gun is used for applying lacquer and the like to the surface to be finished.

The primary object of this invention is automatically to connect a strip of adhesive tape with the masking apron as the latter is drawn off of a supply roll of masking paper.

Apparatus of the type to which this invention relates is exemplified in United States Patents Nos. 1,963,686; 2,012,014; and 2,374,103.

Another object of the present invention is to simplify the construction of tape-applying apparatus and to prevent the tape from adhering to portions of the supply roll of paper other than that from which the apron is being formed.

Still another object is to utilize the force of gravity in pressing the adhesive tape against the masking paper, and further to regulate the distance which the adhesive tape overhangs the edge of the masking paper.

The above and other objects may be attained by employing this invention which embodies among its features a carriage mountedfor vertical movement adjacent one end of a supply roll of masking paper, means on said carriage to support a roll of adhesive tape in overhanging relation to the supply roll of masking p p r, n a pressure roll carried by the carriage below the roll of adhesive tap beneath which tape from the roll of adhesive tape is directed and pressed against the roll .of masking paper by the weight of the carriage and the mechanism carried thereby.

Other features include means adjacent the end of the supply roll of masking paper remote from the carriage for engaging said roll of paper and advancing it toward the pressure roll, and means engaging the end of the supply roll of masking paper beneath the pressure roll yieldingly to hold said supply roll against the adjustable means.

Still other features include an annular peripheral flange on the pressure roller adjacent the end thereof which overhangs the supply r011 by which the adhesive tape is pressed into contact with the paper on the supply roll in spaced relation to the edge thereof.

In the drawings:

Figure 1 is a perspective view of an apparatus for preparing masking aprons, embodying the features of this invention,

3 claims. (01. 154-.-1.6)

Figure 2 is a longitudinal sectional view taken substantially along the line 22 of Figure 1,

Figure 3 is a transverse sectional view taken substantially along the line 33 of Figure 2,

Figure 4 is a perspective view of one of the supporting standards for the roll of masking paper showing the carriag mounted thereon, and

Figure 5 is a perspective view of the guide plate for the supply roll of masking paper.

Referring to the drawings in detail, a base H] is equipped with a U-shaped frame I2 having upstandin legs I 4 and 16 which are pierced intermediate their ends by aligning openings I 8 and 20, respectively. 'It is to be noted that the opening I8 is of greater diameter than the opening 20 for a purpose to be more fully hereinafter described.

Formed in the leg I 6 above the opening 20 is an in spaced relation to the leg i6, as will be readily understood upon reference to Figure 2. Fixed to the legs [4 and I6, adjacent their upper ends, is a substantially horizontally extending U- shapedframe 34, to the bight portion of which is fixed a serrated blade 3'6, beneath which paper leaving the supply roll of masking paper passes to enable separate aprons to be severed from the supply roll. A similar, substantially U- shaped frame 38 is secured to the legs 14 and I6 adiacenttheir upper ends and projects in a direction opposite th frame 34 to form a reinforcing and stiffening structure."

Secured to the leg M of the frame I2 is a vertical guide member designated generally 40 which comprises a standard 42 which is provided at opposite side edges with substantially U-shaped flanges 44, and formed in the standard 42 intermediate its upper and lower ends is an opening 46 which aligns with the opening I 8 in the leg I 4, as will b readily understood upon reference to Figure 2. Mounted for vertical sliding movement on the standard l4 between the guide flanges 44 is a carriage 43 which is provided near its upper and lower ends with internally screw-threaded openings 50 and 52, respectively, for the reception of the threaded ends of bearing studs 54 and 56. (Figure 2.) Mounted for rotation on the upper bearing stud 54 is a flanged core 58 upon which a roll of adhesive tape 60 is supported, and mounted for rotation on the stud 58 directly below the core 58 is a pressure roller designated generally 62. This pressure roller is provided adjacent its end remote from the carriage 48 with an outstanding peripheral flange 8 the periphery of which is preferably knurled for frictional contact with the tape as it leaves the roll 60.

A support spindle 66 is equipped at one end with a head 88 which is shouldered, as at 78, to enter the opening I8 in the leg H! of the frame l2, while the opposite end of the spindle 8'5 is externally screw-threaded, as at 12, for entrance into an internally screw-threaded nut M which, as illustrated in Figure 2, bears against the outer side of the leg 15 of the frame [2, thus to hold the spindle 98 in a horizontal position. Mounted for rotation on the spindle 68 is a thimble provided at one end with an outstanding annular flange i8, and positioned about the spindle 68 between the flange 18 of the thimble FE and the head 68 of the spindle 85 is a compression coil spring 823 which bears against the head 68 and flange l8 yieldingly to urge the thimble 16 toward the guide plate 28. The thimble i8 is preferably of a diameter readily to fit into the central opening of a roll of masking paper 82, so that the roll may be supported for rotation on the spindle 66.

In use, a roll 82 of masking paper is mounted on the thimble 16, and the thimble is then placed between the legs 14 and [6 of the frame l2 and the spindle 66 entered through the opening l8 and the bore of the thimble 16, to pass through the opening 20 in the leg 18. The nut 14 is then threaded on the threaded end 12 of the spindle 68, and the roll 82 of masking paper will be held in the machine in proper position for operation. The spring 88' yieldingly urges the roll of paper against the guide plate 26 which, in turn, is yieldingly held against the end of the thumb screw 26, so that by turning the thumb screw, the guide plate 28 may be moved to shift the roll 82 of masking paper longitudinally on the spindle 66. The roll 60 of adhesive tape having been mounted on the core 58, the machine is ready for operation. A portion of the adhesive tape is unrolled from the roll 60 and passed around the pressure roller 62 as illustrated in Figure 3 so that its adhesive surface is turned toward the roll 82 of masking paper. The tape is pressed against the roll 82 of masking paper by the knurled flange 64 of the pressure roller 62 and as the paper apron is unrolled from the roll of masking paper 82, it will be obvious that it will carry with it a length of adhesive tape which will overhang one edge of the paper as it leaves the roll so that when an apron is severed from the roll by the serrated blade 36, it will have firmly fixed to its edge a strip of adhesive tape which may be employed to support the apron in masking relation to the object being finished. Owing to the fact that the flange 64 is spaced inwardly from the edge of the roll 82 as illustrated in Figure 2, it will be obvious that the pressure on the adhesive tape is applied on the edge thereof nearest the center of the roll 82, and in spaced relation to the end of the roll 82 so as to avoid any possibility of forcing the adhesive tape into engagement with any portion of the roll 82 other than that to which it is to be attached.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is tobe understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

Having described the claimed as new is:

1. An apparatus for preparing masking aprons comprising a base, a U-shaped frame secured at its web portion to said base, a masking paper roll, means for rotatably retaining said roll on the legs of said frame spaced from said base, a vertical support secured to one leg of said frame, a carriage slidably and guidingly mounted on said support, an adhesive tape roll rotatably mounted on said carriage, a presser roll rotatably mounted on said carriage beneath said adhesive tape roll, said pressur roll including a peripheral flange adapted to contact the tape and urge it against the masking paper roll, and means for adjusting said masking paper roll relative to said pressure roll.

2. The combination of claim 1 wherein said first-named means includes a thimble receiving said masking paper roll, said thimble having a flange at one of its ends, and a spindle positioned in said thimble and journaled at its ends in the legs of said frame.

3. The combination of claim 2 wherein said last-named means includes a guide plate secured at one of its ends to the other leg of said frame and adapted to press against said masking paper roll, a set screw through said other leg bearing against said guide plate, and a spring about said spindle interposed between said one leg and the thimble flange urging said masking paper roll towards said guide plate.

WILLIAM A. BIHARY.

invention, what is REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,590,371 Haren June 29, 1926 1,963,666 McCarthy et a1 June 19, 1934 2,012,014 McCarthy Aug. 20, 1935 2,082,114 Littlefield June 1, 1937 2,374,103 Johnson Apr. 1'7, 1945 

